io.github.Patdolitse/piia-engram

What we checked

Six static checks, weighted by risk. Every result reflects only what could be observed in the published package and repository — never intent.

• Injection surface

  unscannable25% of grade

  Tool descriptions/manifest scanned for instruction-injection patterns (imperatives at the model, hidden text, 'ignore previous', data-exfil URLs).

  No tool descriptions, server instructions, prompts, or resources were fetched; nothing to scan for injection.

• Supply chain

  fail25% of grade

  Package provenance: namespace verification, repo linkage, maintainer count, account age, postinstall scripts, typosquat distance.

  Python build script executes at build time: network call in build script

• Credential hygiene

  warn15% of grade

  How the server takes secrets (env vs plaintext config vs hardcoded); secrets appearing in tool schemas.

  tests/test_crypto.py: assigns a literal to secret (test…se (len 15)) — non-provider secret literal; prefer environment intake. tests/test_crypto.py: assigns a literal to secret (rota…st (len 13)) — non-provider secret literal; prefer environment intake. tests/test_crypto.py: assigns a literal to secret (unic…st (len 12)) — non-provider secret literal; prefer environment intake. Reads secrets from the environment (e.g. src/piia_engram/core.py) — the recommended intake shape.

• Permission scope

  warn15% of grade

  Declared tools vs. breadth (filesystem, network, exec); flags shell-exec and unbounded filesystem access.

  references credential paths: src/piia_engram/reconcile.py: references a credential path (/.cursor/) has both shell/exec and network egress — capable of download-and-run, though no such path was observed (src/piia_engram/setup_wizard.py: subprocess.* call; src/piia_engram/mcp_server.py: outbound HTTP/socket call). discloses shell/exec capability: src/piia_engram/setup_wizard.py: subprocess.* call discloses shell/exec capability: src/piia_engram/stats.py: subprocess.* call Capability DISCLOSURE, not a verdict: static analysis sees the primitive is present and reachable, not whether its use is attacker-controlled.

• Version behavior

  fail10% of grade

  Diff of tool definitions between versions; new permissions or changed descriptions in a patch release (the postmark-mcp class).

  vs prior 4.19.1 (minor bump): new capability primitive(s) in source: fs-write, subprocess; new hardcoded outbound host/BCC destination(s): example.com, github.com, img.shields.io, pypistats.org, python.org.

• Transport config

  warn10% of grade

  Remote servers: TLS and auth mode (none/token/OAuth). Local servers: whether the manifest indicates it phones home.

  manifest/source references telemetry behavior — disclosure